Portable lamp



June 1, 1937. DlCKERSON 2,082,689

PORTABLE LAMP Filed March 13, 1937 2 Sheets-Sheet 1 FIG. .1.

INVENTOR. BERT A. D/CKEEJON Bad 8 ATTORNEY.

June 1, 1937. B. A. DICKERSON 2,032,689

PORTABLE LAMP Filed March 13, 1957 2 Sheets-Sheet 2 FIG. 4

INVENTOR. BERT AD/cKE/wwv I ATTORNEY.

FIG.3

Patented June 1, 1937 PATENT OFFlC PORTABLE LAMP Bert A. Dickerson,

Farles Manufact Application March 13,

4 Claims.

ore specifically to those designed to entirely shield the My inventionrelates m lamps which are "P J upon a desk or table where it is needed.

The principal ;object of my invention is the production of a portablelamp of increased efflciency, owing to the construction making availablea larger number of lumens.

A further object is to attain that result by an exceedingly simple andinexpensive construction.

My means of accomplishing the foregoing objects may be more fullycomprehended by having reference to the accompanying drawings, which arehereunto annexed and are a part of this specification in which: 1

Fig. 1 is a side elevation of my lamp with parts broken away and insections showing the light distribution. I

Fig.2 is a vertical sectional view.

Fig. 3 is a detail of a portion of the lamp stand in perspective.

Fig. 4 is a detail stand in perspective.

Similar reference nume parts throughout the entir As shown in the drawia base I from which exte This standard is-prefer rality of spindles 2,3, the detail. views, ing 5 which sli of another portion of the ralsrefer to similar e specification.

ngs, my lamp consists of n'ds upwardly a. standard.

ably composed of a pluand 4, which, as seen in are provided with acentral openps over a pipe or tube 6 which is secured to-the base I andprovides a passage for the electrical conductors (not shown).

Though I have shown a specific form of enclosure for the tube, it willbe clear that any desired enclosing means may be employed. An ornamentalappearance may be imparted to the standard by inserting one or morediscs 1 below and above the spindles 2, 3 and 4. At the upper end of thetube 8, I mount a short Electrolier 'keyless socket 8.

In this socket I mount an electric lamp bulb 9. Surrounding the socket 8is a cup member H) which is preferably provided with straightcylindrical sides ll clearly seen in the sectional view.

Inside this cup Ill and snugly telescoping inside the straight sides ItI mount a flaring reflector or holder i 2, the lower portion of which isprovided with slots lZa to furnish a spring tension against the sides Hfor taking up inaccuracy or any variation in the cup Ill or the holderI2, and the use of such slots permits the holder to resiliently andadjustably engage the cup member.

uring a corporation of mm Decatur, Ill., assignor to Company, Decatur,lll., ois 1 1937, Serial No. 130,624 (Cl. 240-41) The walls of theholder [2 flare outwardly from the top edge of the straight side wallsll of the cup l0, and terminate at a point in line with the filament 24of the lamp bulb 9. The inner surface of this flaring portion isprovided with a coating of suitable reflecting media thus forming asupplemental reflector so that the light rays impinging thereon arereflected and redirected upwardly where they impinge upon the mainreflector I3. The main reflector I3 is pref- 10 erably supported by astamped frame l4 having oppositely extending leg portions Ha, Mbrespectively, projecting from a central upwardly concave flange l5, andhaving their lower ends flatened as illustrated and preferably rivetedto 15 the holder or supplemental refl'ector l2 adjacent its upper edge.In flange Hi there is provided a centrally threaded opening l6 intowhich is fitted a threaded portion I! of the finial 20, the flange l8 ofwhich has an annulus |8a on the under side adjacent its periphery forcircumferential clamping of reflector I3. Finial 20 with its flange l8and screw portion I'l serves to press the reflector I3 tightly upon theupwardly concave flange l5 of frame I4 thus holding it firmly in 25place.

Surrounding the recess I9 is a downwardly concave annular portion 2| inthe reflector l3 so shaped as to receive and redirect a portion of thedirect light rays from the source and the reflected 3O ones from thesupplemental reflector l2 onto the working plane.

' The main reflector I3 is provided with an enlarged annular downwardlyconcaved portion. 22 the edge 23 of which extends below theplane 35 ofthe upper edge of the supplemental reflector l2. In this manner Icompletely shield the electric lamp bulb 9from the eyes of the user. Butthe light rays are reflected and redirected over a comparatively largesurface. 4

It will be clear to those skilled in the art that I have utilized thesuppo'rt for the reflector supporting frame as a supplemental reflectorthus increasing the efflciency of the lamp without materially increasingthe expense of manufacture. Moreover, it will be seen that numerousdesigns .may be produced simply by varying the positions of the discs Iand the spindles 2, 3-and 4 without any additional expense. The main andsupplemental reflectors are preferably made of opaque material though.obviously they may be con- 'structed of another material if desired.

Having described my invention, what I'regard as new and desire to secureby Letters Patent is:

1. A stand lamp comprising a pedestal, a cup shaped member at the top ofthe pedestal, an upwardly flaring opaque member having its lower portionadjustably and frictionally engaged by the cup member, a lamp socket insaid cup member, an electric lamp in said socket, the upper edge of themember being substantially in alignment with the filament of the lamp,areflector supporting frame secured to said flaring member, reflectivemeans within the member, a concave downwardly facing unitary reflectorsupported by said frame and having its lower edge extendingsubstantially below the filament of the lamp, and means for securingsaid concave reflector to the top portion of the frame, axially of thestand lamp.

2. A stand lamp comprising a pedestal, a cup shaped member at the top ofthe pedestal, an upwardly flaring opaque member having its lower portionfrictionally engaged by the cup member, a lamp socket in said cupmember, an electric lamp in said socket, the upper edge of the memberbeing substantially in alignment with the filament of the lamp, areflector supporting frame secured to said flaring member, a reflectingsurface within the member, a concave downwardly facing unitary reflectorsupported by said frame ,and having its lower edge extendingsubstantially below the filament of the lamp, and means for securingsaid concave reflector to the frame, said concave reflector having acentral recess to receive the top portion of the frame; and saidsecuring means comprising a finial threadedly engaging the frame,substantially axially of the stand lamp.

3. In a stand lamp, a base, a tube which extends upwardly therefrom, aplurality of ornamental members surrounding said tube, a cup adjacentthe upper end of said tube, a lamp socket threadedly engaging the tubeand assembling said cup upon said tube, an electric bulb, an upwardlyflaring member having its lower portion telescopically engaging saidcup, reflecting means in said member, the upper edge of said memberbeing in a plane with the filament of the bulb, a concave reflectorhaving a central concavity of relatively small radius and. an outerconcavity of greater radius carried by said frame,-the lower edge of theconcave reflector extending below the upper edge of the flaring member,and means engaging the central concavity for attaching the concavereflector to the frame.

4. In a stand lamp, a base, a tube which extends'upwardly therefrom, anelectric lamp bulb supported by said tube, ornamental means enclosingsaid tube, a cup secured adjacent the upper end of said tube, a lowerreflector having its walls flaring outwardly and upwardly mounted insaid cup, the upper edge of said reflector being substantially in aplane with the filament of the bulb, a supporting frame secured to saidlower reflector, a concave upper reflector carried by said frame andhaving its lower edge extending substantially below the upper edge ofthe lower reflector; the lower portion of the lower reflector beingslotted to resiliently and adjustably support said reflector in saidcup.

BERT A. DICKERSON.

